## 20/Dec/2023

* fixed the implementation of BIsAppInstalled(), it must lock the global mutex since it is thread-safe, otherwise it will cause starvation and the current thread wion't yield, which triggers some games

* more accurate behavior for BIsAppInstalled(), reject app ID if it was in the DLC list and isUnlockAllDlc was false

* basic implementation for RequestAppProofOfPurchaseKey() and RequestAllProofOfPurchaseKeys()

* a simple implementation for GetEarliestPurchaseUnixTime()

* more accurate implementation for BGetSessionClientResolution, set both x & y to 0

* return false in Steam_Apps::BIsDlcInstalled() when the given app ID is the base game

* check for invalid app ID uint32_max in different places

* more accurate implementation for Steam_Client::BReleaseSteamPipe(), return true if the pipe was released successfully

* lock the global mutex and the overlay mutex in different places just to be on the safe side, without it, some games suffer from thread starvation, might slow things down

* added missing env var "SteamOverlayGameId" to steam_client and client_loader

* added a startup timer + counter for reference, currently used to print timestamp in debug log

* consistent debug log location, for games that change cwd multiple times while running

* fixed error propagation in Windows build script, apparently set /a var+=another_var works only if another_var is a defined env var but NOT one of the "magic" builtins like errorlevel

## 17/Dec/2023
* More accurate implementation for BIsAppInstalled(), it now rejects uint32_max

* Allow behavior customizization via installed_app_ids.txt config file

* Limit/Lock list of installed apps on an empty file (similar to dlc.txt)

* Changed the behavior of GetCurrentBetaName() to comply with the docs, might break stuff

* Allow customizing the behavior via is_beta_branch.txt + force_branch_name.txt config files

* New script to generate native executable for `generate_emu_config` on Linux using pyinstaller

* Setup Github Worflows to:
  * Build `generate_emu_config` for `Linux` when you push code to a branch whose name matches the pattern `ci-build-gen-linux*`
  * Build `generate_emu_config` for `Windows` when you push code to a branch whose name matches the pattern `ci-build-gen-win*`
  * Build the emu for `Linux` when you push code to a branch whose name matches the pattern `ci-build-emu-linux*`
  * Build the emu for `Windows` when you push code to a branch whose name matches the pattern `ci-build-emu-win*`
  * Build everything when you push code to a branch whose name is `ci-build-all`
  * Build everything and create a release when you push a tag whose name matches the pattern `release*`

* Packaging scripts for both Windows & Linux, usable locally and via Github Workflows
  * For the emu:
    * First run `build_win_deps.bat` (Windows)  
    or `sudo ./build_linux_deps.sh` (Linux)
    * Run `build_win.bat release` + `build_win.bat debug` (Windows)  
    or `./build_linux.sh release` + `./build_linux.sh debug` (Linux)
    * Finally run `package_win.bat release` + `package_win.bat debug` (Windows)  
    or `sudo ./package_linux.sh release` + `sudo ./package_linux.sh debug` (Linux)
  * The same goes for `generate_emu_config` (scripts folder) but the scripts do not take any arguments, so no `release` or `debug`

* Added all third-party dependencies as local branches in this repo + refer to these branches as submodules, making the repo self contained

* based on cvsR4U1 by ce20fdf2 from viewtopic.php?p=2936697#p2936697

* apply the fix for the Linux build (due to newer glibc) from this pull request by Randy Li: https://gitlab.com/Mr_Goldberg/goldberg_emulator/-/merge_requests/42/

* add updated translation of Spanish + Latin American to the overlay by dragonslayer609 from viewtopic.php?p=2936892#p2936892
* add updated translation of Russian to the overlay by GogoVan from viewtopic.php?p=2939565#p2939565

* add more interfaces to look for in the original steam_api by alex47exe from viewtopic.php?p=2935557#p2935557

* add fix for glyphs icons for xbox 360 controller by 0x0315 from viewtopic.php?p=2949498#p2949498


## 14/Dec/2023
* bare minimum implementation for SDK 1.58a
  + backup the current version of the interface 'steam ugc'
    -  create new file: isteamugc017.h
      > copy the current version of the interface to this file
      > don't copy enums, structs, constants, etc..., just copy the pure virtual (abstract) class of the interface
      > rename the abstract class to include the current version number in its name, i.e. 'class ISteamUGC017'
      > create a file header guard containing the interface version in its name, i.e. 'ISTEAMUGC017_H'
      > if the file has '#pragma once', then guard this line with '#ifdef STEAM_WIN32' ... '#endif', I don't know why
  + isteamugc.h (this always contains the declaration of latest interface version)
    - declare the new API: GetUserContentDescriptorPreferences()
    - update the API: SetItemTags() to use the new argument
    - update the interface version to STEAMUGC_INTERFACE_VERSION018
  + steam_ugc.h (this always contains the implementation of ALL interfaces versions)
    - add the backed-up abstract class to the list of inheritance, i.e. 'public ISteamUGC017'
    - (needs revise) implement the new API: GetUserContentDescriptorPreferences()
    - add a new overload of the API: SetItemTags() which takes the new additional argument
  
  + backup the current version of the interface 'steam remote play'
    -  create new file: isteamremoteplay001.h
      > copy the current version of the interface to this file
      > don't copy enums, structs, constants, etc..., just copy the pure virtual (abstract) class of the interface
      > rename the abstract class to include the current version number in its name, i.e. 'class ISteamRemotePlay001'
      > create a file header guard containing the interface version in its name, i.e. 'ISTEAMREMOTEPLAY001_H'
      > if the file has '#pragma once', then guard this line with '#ifdef STEAM_WIN32' ... '#endif', I don't know why
  + isteamremoteplay.h (this always contains the declaration of latest interface version)
    - declare the new API: BStartRemotePlayTogether()
    - update the interface version to STEAMREMOTEPLAY_INTERFACE_VERSION002
    - fix file header guard from _WIN32 to STEAM_WIN32
  + steam_remoteplay.h (this always contains the implementation of ALL interfaces versions)
    - add the backed-up abstract class to the list of inheritance, i.e. 'public ISteamRemotePlay001'
    - (needs revise) implement the new API: BStartRemotePlayTogether()
  
  + steam_api.h
    - #include the backed-up interface files:
      > #include "isteamugc017.h"
      > #include "isteamremoteplay001.h"
    - declare the new API: SteamInternal_SteamAPI_Init()
    - add a new enum ESteamAPIInitResult
    - fix return type of SteamAPI_InitSafe() from bool to steam_bool (some stupid games read the whole EAX register)
    - add a useless inline implementation for the API: SteamAPI_InitEx(), not exported yet but just in case for the future
  + steam_gameserver.h
    - declare the new API: SteamInternal_GameServer_Init_V2()
    - fix return type of SteamGameServer_Init() from bool to steam_bool (some stupid games read the whole EAX register)
    - add a useless inline implementation for the API: SteamGameServer_InitEx(), not exported yet but just in case for the future
  + steam_api_common.h
    - declare a new type: SteamErrMsg
  + dll.cpp (this has the implementation of whatever inside steam_api.h + steam_gameserver.h)
    - (needs revise) implement the new API: SteamInternal_SteamAPI_Init()
    - (needs revise) implement the new API: SteamInternal_GameServer_Init_V2()
    - read some missing interfaces versions when parsing steam_interfaces.txt
    - initialize all interfaces versions with the latest ones available, instead of hardcoding them
  
  + steam_client.cpp
    - add a new version string for the interface getter GetISteamUGC()
    - add a new version string for the interface getter GetISteamRemotePlay()
  
  + isteamnetworkingsockets.h
    - fix the signatures of the APIs: (ISteamNetworkingConnectionCustomSignaling vs ISteamNetworkingConnectionSignaling)
      > ConnectP2PCustomSignaling()
      > ReceivedP2PCustomSignal()
  + isteamnetworkingsockets009.h
    - fix the signatures of the APIs: (ISteamNetworkingConnectionCustomSignaling vs ISteamNetworkingConnectionSignaling)
      > ConnectP2PCustomSignaling()
      > ReceivedP2PCustomSignal()
  + steam_networking_sockets.h
    - implement the missing overloads of the APIs: (ISteamNetworkingConnectionCustomSignaling vs ISteamNetworkingConnectionSignaling)
      > ConnectP2PCustomSignaling()
      > ReceivedP2PCustomSignal()
  
  + steam_api_flat.h
    ////////////////////
    - declare new interfaces getters:
      > SteamAPI_SteamUGC_v018()
      > SteamAPI_SteamGameServerUGC_v018()
    - declare the new API: SteamAPI_ISteamUGC_GetUserContentDescriptorPreferences()
    - (needs revise) update signature of the API: SteamAPI_ISteamUGC_SetItemTags() to add the new argument
      this will potentially break compatibility with older version of the flat API
    ////////////////////
    - declare new interface getter: SteamAPI_SteamRemotePlay_v002()
    - declare the new API: SteamAPI_ISteamRemotePlay_BStartRemotePlayTogether()
    ////////////////////
    - fix the signatures of the APIs: (ISteamNetworkingConnectionCustomSignaling vs ISteamNetworkingConnectionSignaling)
      > SteamAPI_ISteamNetworkingSockets_ConnectP2PCustomSignaling()
      > SteamAPI_ISteamNetworkingSockets_ReceivedP2PCustomSignal()
  
  + flat.cpp
    ////////////////////
    - implement new interfaces getters:
      > SteamAPI_SteamUGC_v018()
      > SteamAPI_SteamGameServerUGC_v018()
    - implement the new API: SteamAPI_ISteamUGC_GetUserContentDescriptorPreferences()
    - (needs revise) update signature of the API: SteamAPI_ISteamUGC_SetItemTags() to use the new argument
      this will potentially break compatibility with older version of the flat API
    ////////////////////
    - implement new interface getter SteamAPI_SteamRemotePlay_v002()
    - implement the new API: SteamAPI_ISteamRemotePlay_BStartRemotePlayTogether()
    ////////////////////
    - fix the signatures of the APIs: (ISteamNetworkingConnectionCustomSignaling vs ISteamNetworkingConnectionSignaling)
      > SteamAPI_ISteamNetworkingSockets_ConnectP2PCustomSignaling()
      > SteamAPI_ISteamNetworkingSockets_ReceivedP2PCustomSignal()
  
  + isteamfriends.h
    - (needs revise) add a missing (or new?) member m_dwOverlayPID to the struct GameOverlayActivated_t, hopefully this doesn't break stuff
  
  + steamnetworkingtypes.h
    - add new (or missing?) members to the enum ESteamNetworkingConfigValue:
      > k_ESteamNetworkingConfig_RecvBufferSize
      > k_ESteamNetworkingConfig_RecvBufferMessages
      > k_ESteamNetworkingConfig_RecvMaxMessageSize
      > k_ESteamNetworkingConfig_RecvMaxSegmentsPerPacket
  
  + add the file isteamdualsense.h, it isn't used currently but just in case for the future
  
  + update descriptions/comments or refactor/spacing
    - isteamapplist.h
    - isteamgamecoordinator.h
    - isteamps3overlayrenderer.h
    - isteamuserstats.h
    - isteamutils.h
    - isteamvideo.h
    - steamhttpenums.h
    - steamtypes.h

* use Unicode when sanitizing settings, mainly for local_save.txt config file
  + new dir "utfcpp": containg all the source/include files of this library: https://github.com/nemtrif/utfcpp
  + common_includes.h: include the new library "utfcpp"
  + settings.cpp: in Settings::sanitize(): convert to utf-32 first, do the sanitization, then convert back to std::string and return the result

* avoid locking the global mutex every time when getting the global steamclient instance
  + dll.cpp: in get_steam_client(): only lock when the instance is null and double check for null, should speed up things a little bit
* in different places, avoid locking gloal mutex if the relevant functionality was disabled
  + example in steam_user_stats.h: SetAchievement()
  + example in steam_overlay.cpp:
    > Steam_Overlay::AddMessageNotification()
    > Steam_Overlay::AddInviteNotification()

* explicitly use the ASCII version of Windows APIs to avoid conflict when building with define symbols UNICODE + _UNICODE
  - base.cpp: GetModuleHandleA()
  - steam_overlay.cpp: PlaySoundA()

* fix the implementation of RtlGenRandom stub:
  + return a number
  + use extern "C" if building in C++ mode

* add new build scripts for both Windows and Linux for a much easier dev/build experience,
  both Windows and Linux scripts will run parallel build jobs for a much faster build times,
  by default, the scripts will use 70% of the max available threads, but if the auto detection didn't work,
  you can pass for example -j 10 to the scripts to use 10 parallel jobs
  
  on Linux, archives (.a files) of third party libraries are bundled wholly, and built statically via:
  -Wl,--whole-archive -Wl,-Bstatic -lssq -lcurl ... -Wl,-Bdynamic -Wl,--no-whole-archive
  this ensures that the final output binary (for example: libsteam.so) won't require these libraries at runtime

  + to build on Linux (I'm using latest Ubuntu on WSL)
    - run as sudo ./build_linux_deps.sh, this will do the following:
      > download and install the required build tools via apt-install
      > unpack the third party libraries (protobuf, zlib, etc...) from the folder third-party to build-linux-deps
      > build the unpacked libraries from build-linux-deps
      
      you only need this step once, additionally you can pass these arguments to the script:
      -verbose: force cmake to display extra info
      -j <n>: force cmake to use <n> parallel build jobs
      
    - without sudo, run ./build_linux.sh and pass the argument "release" or "debug" to build the emu in the corresponding mode,
      this will build the emu inside the folder build-linux
      some additional arguments you can pass to the script:
        -lib-32: prevent building 32-bit libsteam_api.so
        -lib-64: prevent building 64-bit libsteam_api.so
        
        -client-32: prevent building 32-bit steamclient.so
        -client-64: prevent building 64-bit steamclient.so
        
        -tool-clientldr: prevent copying the script steamclient_loader.sh
        -tool-itf: prevent copying the script find_interfaces.sh
        -tool-lobby-32: prevent building executable lobby_connect_x32
        -tool-lobby-64: prevent building executable lobby_connect_x64
        
        +lowperf: (UNTESTED) pass some arguments to the compiler to prevent emmiting instructions for: SSE4, popcnt, AVX
        
        -j <n>: force build operations to use <n> parallel jobs
    
  + to build on Windows (just install Visual Studio 2019/2022)
    - without admin, run build_win_deps.bat, this will do the following:
      > unpack the third party libraries (protobuf, zlib, etc...) from the folder third-party to build-win-deps
      > build the unpacked libraries from build-win-deps
      
      you only need this step once, additionally you can pass these arguments to the script:
      -verbose: force cmake to display extra info
      -j <n>: force cmake to use <n> parallel build jobs
      
    - without admin, run build_win.bat and pass the argument "release" or "debug" to build the emu in the corresponding mode,
      this will build the emu inside the folder build-win
      some additional arguments you can pass to the script:
        -lib-32: prevent building 32-bit steam_api.dll
        -lib-64: prevent building 64-bit steam_api64.dll
        
        -ex-lib-32: prevent building experimental steam_api.dll
        -ex-lib-64: prevent building experimental steam_api64.dll
        
        -ex-client-32: prevent building experimental steamclient.dll
        -ex-client-64: prevent building experimental steamclient64.dll
        
        -exclient-32: prevent building experimental client steamclient.dll
        -exclient-64: prevent building experimental client steamclient64.dll
        -exclient-ldr: prevent building experimental client loader steamclient_loader.exe
        
        -tool-itf: prevent building executable find_interfaces.exe
        -tool-lobby: prevent building executable lobby_connect.exe
        
        +lowperf: (UNTESTED) for 32-bit build only, pass the argument /arch:IA32 to the compiler
        
        -j <n>: force build operations to use <n> parallel jobs

* added all required third-party libraries inside the folder "third-party"

* greatly enhanced the functionality of the generate_emu_config script + add a build script
  + run recreate_venv.bat to
    > create a python virtual environemnt
    > install all required packages inside this env
  + run rebuild.bat to produce a bootstrapped .exe built using pyinstaller
  + inside the folder of the built executable
    > create a file called my_login.txt, then add your username in the first line, and your password in the second line
    > run the .exe file without any args to display all available options
    

* revert the changes to SetProduct() and SetGameDescription()

* in steam_overlay.cpp: AddAchievementNotification(): prefer original paths of achievements icons first, then fallback to "achievement_images/"

////////// older changes
* add missing implementation of (de)sanitize_string when NO_DISK_WRITE is defined which fixes compilation of lobby_connect

* check for empty string in (de)sanitize_file_name() before accessing its items

* implement new API: GetAuthTicketForWebApi()
  + base.h: declare the new API: getWebApiTicket()
  + base.cpp: implement the new API: Auth_Ticket_Manager::getWebApiTicket()
  + steam_user.h: call the new API inside GetAuthTicketForWebApi()

* add an updated and safer impl for Local_Storage::load_image_resized() by RIPAciD from viewtopic.php?p=2884627#p2884627

* add missing note in ReadMe about libssq

* add new release 4 by ce20fdf2 from viewtopic.php?p=2933673#p2933673
* add hotfix 3 by ce20fdf2 from viewtopic.php?p=2921215#p2921215
* add hotfix 2 by ce20fdf2: viewtopic.php?p=2884110#p2884110
* add initial hotfix by ce20fdf2